You asked

Is the 7artisans 25mm f 0 95 good in low light?

Here is what the site says about that.

From 7Artisans 25mm f/0.95: 7Artisans 25mm f/0.95: A prime lens by 7Artisans for APS-C cameras, 25mm f/0.9. Specs - Maker: 7Artisans - Focal length: 25mm (prime) - Maximum aperture: f/0.9 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z, Canon RF, L-Mount, Micro Four Thirds - Stabilised: no - Autofocus: no, manual focus What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z, L-Mount): like 38mm on full frame; f/0.9 ...

From 7Artisans 50mm f/0.95: 7Artisans 50mm f/0.95: A prime lens by 7Artisans for APS-C cameras, 50mm f/0.9.

Quoted from this site's pages.

From these pages